Machine for applying solder to the ends of condenser bodies



2,510,463 NG SOLDER TO THE ENDS 0F CONDENSER BODIES Original Filed Sept. 28, 1942 H. I. DANZIGER MACHINE FOR APPLYI June 6, 1950 2 Sheets-Sheet l I INVENTOR. Harold 1. Da nzzlger i ATTORNEY.

J 1950 H. I. DANZIGER MACHINE FOR APPLYING SOLDER Tox THE ENDS 0F CONDENSER BODIES -2 Sheets-Sheet 2 Original Filed Sept. 28, 1942 mvmozz Harold J. Danzzlger Patented June 6, 1950 MACHINE FOR APPLYING SOLDER TO THE ENDS OF CONDENSER BODIES Harold I. Danziger, West Orange, N. J.

Original application September 28, 1942, Serial No. 460,016. Divided and this application tober 11, 1946, Serial No. 702,873

3 Claims.

This application is a division of my pending application Serial No. 460,016 (now Patent No. 2,419,484), filed September 28, 1942, and entitled Condenser assembling machine. The present invention relates particularly to machines for coating the ends of condenser bodies with solder to prepare the bodies for the subsequent soldering of terminals thereto.

It is an object of my invention to provide an efficient commercial machine for the purpose stated.

It is another object to provide an improved coating machine which is adapted to coat automatically the ends of condenser bodies fed thereto in succession.

It is another object to provide a coating ma chine which is adapted for combination with assembling machines to produce electrical condensers automatically on a commercial basis.

A further object is to provide a coating machine of simple and novel mechanism.

These and other objects of my invention lie in the details of construction, arrangement of parts and combinations of elements which are incorporated in the embodiment of my invention herein particularly shown, and will be apparent from the following description and the appended claims.

In the description of my invention reference is had to the accompanying drawings, of which:

Figure 1 is a top plan view of acondenser assembling machine in which my invention is incorporated;

Figure 2 is a vertical section takensubstantially on the line 2-2 of Figure 1; V

Figure 3 is a fractional vertical section, to enlarged scale, taken substantially on the line 3--3 of Figure 1 and showing the coating device according to my invention; a V

Figure 4 is a fractional front elevation of the device of Figure 3; and g Figure 5 is a vertical section taken substantially on the line 55 of Figure 3.

The coating device of my invention has been incorporated in a complete machine for automatically assembling electrical condensers, wherein the device tins-i. e., coats with solderthe ends of the condenser bodies to prepare them so that terminals may next be soldered thereto as described in my above mentioned parent application. This coating device may be employed without the other assembling components of this assembling machine but with parts of the frame and feed mechanism to provide a complete coating machine wherefore such parts of the assembling machine as are necessary to form a complete coating machine are herein next described.

In Figures 1 and 2 there will be seen a main frame it of a enerally circular form as viewed from the top. This frame has radial webs ll supporting a central'bearing [2 in which there is journalled a vertical shaft 13. Carried by the shaft l3 above the frame is a circular table I4 comprising a central spider and a circular horizontal shelf I5 disposed about the periphery of the spider. In the shelf at equally spaced intervals are radial slots 16, and disposed in each slot is a tumbler ll. These tumblers are in the form of tubes having bores to receive snugly the shells i8 and condenser bodies 18' which are to be coated.

In the operation of the machine, the table is advanced with an intermittent rotary motion in a counterclockwise direction, the distance of each interval of advance being such as to move each tumbler Il' into the position previously occupied by the one immediately ahead of it. This intermittent advance of the table is effected by a ratchet mechanism comprising a lever l9 pivoted on the shaft 13 beneath the table and pivotally carrying a pawl 20 which engages a circular rack 2| mounted on the underside of the table. A reciprocatory movement of the lever such as will advance the table intermittently an interval at a time is effected by a rotating wheel 22 carried by a shaft 23 and coupled by a link 24 to the lever IS. A brake 25, which comprises a drum 25' and a brake band 25 that frictionally embraces the drum and is held stationary to the frame by a post 26, serves to prevent inertia over-running of the table at the end of each advance and to hold the table stationary between successive advances.

The tumblers are journalled to standards which depend from the shelf l5 at opposite sides of each slot I BL This journalling is done so that the tumblers may be invertedto permit like operations on opposite ends of the condenser bodies by identical mechanisms, but for the purposes of the present invention the tumblers may be fixedly held to the shelf in upright positions as shown. Such upright positioning of the tumblers is maintained by coupling a trunnion of each tumbler by gearing 52 to a radially extending shaft 43 journalled in standards 44 of the shelf, and by locking the shafts 43 by securing heads 45 to the ends thereof which have horizontal diametrical tongues 46 that slide, as the table is moved, on stationary arcuate plates 41 carried by the frame it]. In order to retain the condenser bodies in the tumblers, there are provided stationary plates 49, held by brackets in Figures 1 and 2 may be briefly noted. At the,

place designated by the reference numeral 2! in Figure 1 there is a loading stationwhereat.

the condenser shells l8 and bodies l8" are inserted by hand in the successiveltumblersas the table is advanced. Following the loading station there are, in the sequence here-named; a, first tinning station 28 for coating the lower end .of each condenser body with solder, a turning station 29 for inverting the tumblers, a second tin-v ning station 28a, a soldering station 30 for securinga terminal to the lower end of each condenser body, a second turning station 29, a second soldering, station 3Ga,.a sealing station 32 for sealing the upper end ofeach shell, a third turning station 29, ,a second sealing station 320., a testing station 34 for testing each condenser for short circuitsand ejecting it if it is defective, a testing station 34a,for testing each condenser for capacity and'ejecting it if its capacity exceeds prescribed tolerances; and an ejectingstation v36 for ejecting eachcondenser from the machine which. has passed, the testing stations.

The present inventionis concerned particularly with the tinning stations28 and is herein next described in detail.

The tinning station 28, which is shown in detail in Figures 3, 4 and 5, comprises a continuously rotating roller 8!] partially immersed in a molten solder'bath 8!. The peripheral surface of the roller is provided. with small pockets, as by knurling, in order that it may effectively pick up the solder and carry it from the bath as the roller rotates. Each condenser body conveyed from the loading station to the tinning station is moved directly overhead the roller 88; then while the tableis at.rest the condenser body at this station is pressed down through its shell onto the knurled surface of the roller. Solder is thus carried to the condenser body to tin the lower end thereof-.-

The solder bath 8| is contained in a trough 82 which is supported by an outwardly extending, subsidiary frame: portion 83 of .the main frame I 0. In-the-bottom wall of the trough there is a chamber'84qinwhich there is housed an electrical heating unit 85 for maintaining the solder bath in azproperly-heated state, the open end portionMfl of'the chamber beingcounterboredand threaded; to receive athreaded hub portionv 85 of theheating unit whereby to hold the-unit in place The :roller :80 is, secured to a horizontal shaft 81 which ,is journalled in bearlugs 88 provided, in the sidewalls ;of the trough. The shaft 81 is coupledthrough right-angle bevel gearing 89 to a vertical shaft 90 which is journalled in a bearing 9l-of the frame 83; this vertical shaft is in turn coupled through rightangle gbevel gearing 92 to a horizontal drive shaft 93'ijournalled in standards 94' of the frame 83. the drive shaft 93 extends inwardly through an opening 95 in the'mainl frame lil. Within the frame this shaft has a drive connection with a unitary drive mechanism for the machine, from which the shaft receives continuousmovement at aerate of one revolution for eachastep: of advance 4 of the table. This drive mechanism, which may be of any suitable form, need not be herein described as reference to one suitable form thereof may be had in my abovementioned parent application.

Successive ones of the retaining plates 49 are spaced apart at "the tinningstation, andthe open space between the endsiof .the plates is occupied by the top portion of the roller 80, the roller being 1- positioned though at a, level somewhat below that of thelower ends of the tumblers as is shown in. Figure 5, this lowered positioning of the roller being to prevent the depositing of solder onto the tumblers. The end portion 49' of the retaining plate which precedes the roller in respect of the direction of advance of the table, is inclined downwardly substantially to the level of the top portion of the roller. Thus, the condenser bodies, as'they are conveyed to the tinning station, are permitted to move down gradually by their own weightronto the=rclleri Howeverrto insure not only-1a contact but also:a;definite;pressure of each condenser body against. the roller, each condenser body 1 is spring-pressed. against the roller during the-interval .of. itsoccupancy of the tinning'station. The mechanismfor sospressingrthecontdenser bodies against the roller. includes :a plunger rod at the side of the tableewhich has an arm 9'? at its upper end: overhanging the. shelf. l5 and carrying a, downwardly. extending: pin 98 in line overhead with the bore of the tumbler at the tinning station. The plunger-rodalfi slides verti callyin a pair of spaced bearings 39 0f the frame 83, and is biased downwardly by a compression spring I598 interposed betweenithe'upper one-0f the bearings -99 andia collar 101 on the rod. The plunger rod'is controlled'at the bottom by a cam I82; This cam is ofJth'e'one-lobe type and is mounted on the outer' endof the aforementioned driveshaft 93"to receive-one'revolution of movement for-each step of advarme of the table. The camis timed in relation to the ratchet advance for-the'table so thatthelobe thereof will engage the plunger rodjand'hold it in a raised position, wherein the pin 9%" clears the tumblers, while the table is'in movement and so 'that'the recession of the cam will traverse the end of the plunger rod and free the rod to move down under the influence of the spring HM while the table is at rest." When-the plunger-rod is so moved downwardly, thepin 98"enters the tumbler at the tinning stationand presses the tcondenser body which is Within this tumbler down" onto ,the roller 80, the movement of the condenser-body being relative to the. shell as the latter tightly fits and is held stationary to the tumbler. This relative movement of the body to the shell has the advantage of preventing. solder from being deposited onto the end of the shell.

As the table advances, the condenserbody at the tinning station is slid off from the roller-8!] onto'the end portion 49" of thenext succeeding one of the retaining plates 49', there ,being. a bevel I03 on the end portion 49" so that the con: denser body may pass smoothly from the roller ontotheplate, as. is shown. in Figured This end portion 495' is inclinedupwardly so .asto, cam the condenser body .back to-its normal level within the tumbleras-the body is conveyed one step of advance beyond the tinning-statiom While I have herein. shown. the condenser bodies [8' as being-placedwithin respectiveshells l8, it will be understoodthat the shells =-are unnecessary; to. the functioningy of. the coating ma.-

chine of the present invention and may therefore be omitted.

Preferably, the present coating machine includes the station 36 for ejecting the coated condensers from the machine. Also, it may desirably include a turning station 29 and a second tinning station so that both ends of each condenser are automatically coated. However, these additional stations form no Part of the invention herein claimed and need not be herein described. 7

The embodiment of my invention herein particularly shown will be understood to be illustrative and not limitative of my invention as the same is subject to changes and modifications without departure from the scope of my invention, which I endeavor to express according to the following claims.

I claim:

1. In a machine for coating the ends of condenser bodies with solder, including a frame: the combination of a conveyor movably mounted on said frame and having thereon equally spaced holders for receiving condenser bodies in upright positions; drive means for intermittently advancing said conveyor by successive distances equal to the spacing between successive ones of said holders; stationary support means on said frame below said holders for slidably supporting said condenser bodies as said conveyor is moved, said support means having an open space at a rest position of successive ones of said bodies; a solder bath; an endless solder-transmitting means moved from said bath to said open space; and means coupled to said drive means and operated intermittently thereby during successive rest periods of said conveyor for pressing successive ones of said condenser bodies against said solder transmitting means.

2. A machine for applying solder to the ends of a series of condenser bodies in succession, comprising a conveyor having a series of equally spaced devices for holding said condenser bodies respectively; a heated solder bath; a single applicator for carrying solder from said bath to a station adjacent to the path of said condenser bodies; means for intermittently advancing said conveyor by successive distances equal to the spacing between successive ones of said holding devices whereby to move said bodies successively to said station; reciprocating means at said station for moving each condenser body transversely to said path against said applicator; and means coupling said reciprocating means to said advancing means for causing the former to be operated in timed relation with the advance of said conveyor whereby each con.- denser body is moved against said applicator when the condenser body reaches said station and while said conveyor is at rest.

3. The combination set forth in claim 2, including spring means acting on said reciprocating means in a direction to urge a condenser body against said applicator, wherein said coupling means is adapted to hold said reciprocating means in a retracted position during each advance of said conveyor and to release the reciprocating means for operation yieldably against the condenser body by said spring means while said conveyor is at rest.

HAROLD I. DANZIGER.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 692,040 White Jan. 28, 1902 808,760 Heybach Nov. 7, 1905 1,810,223 Peterson June 16, 1931 1,954,733 Hansen Apr. 10, 1934 2,038,525 Cate Apr. 28, 1936 2,057,037 Kronquest Oct. 13, 1936 2,069,386 Palucki Feb. 2, 1937 2,079,563 Reuter May 4, 1937 2,087,809 Nichols et a1 July 20, 1937 2,257,740 Goebel et al. Oct. 7, 1941 2,387,673 McCullough et a1. Oct. 23, 1945 

